Paper defect marking device

Abstract

The paper defect marking device provided by the present application is provided with an image acquisition unit, a marking unit and a controller in sequence on the frame along the direction of external paper conveyance; the controller is connected to the image acquisition unit and the marking unit, and is used to collect image data of external paper and control the marking unit to mark defective paper. The paper defect marking device can perform online quality monitoring of external paper on the production line. When the controller receives the defect image acquired by the image acquisition unit, the marking unit is controlled to mark the defect of the external paper, so as to distinguish defective paper from qualified paper during subsequent quality inspection. The marking unit affixes a label to the defect of the external paper. Whether the paper is rolled or cut into sheets by a sheet cutter, the location and number of the defects can be intuitively seen, and the quality of the paper can be intuitively and accurately characterized. The defective paper can be directly extracted through the label to ensure that the paper sheets leaving the factory are all qualified products, thereby preventing defective paper from flowing into customers.

Description

Technical Field

[0001] The present application belongs to the technical field of paper production equipment, and specifically relates to a paper defect marking device. Background Art

[0002] Paper production includes processes such as printing, coating, hot stamping or laminating. Defects such as discoloration, color cast, indentation, wrinkles or damage are inevitable in the production process. Generally, the quality of paper is controlled by random inspection of products off the production line. After random inspection, if the defect rate of the product is lower than a certain standard, it is considered qualified. Due to errors, the defect rate during random inspection cannot fully represent the quality of the product, nor can it avoid the risk of defective paper flowing into customers. Therefore, how to feedback problems in the paper production process in real time and prevent defective paper from entering the final product is a technical problem that people in this technical field need to overcome. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a paper defect marking device to mark paper with defects during the production process so that the final quality inspection process can truly reflect the quality of the product and at the same time help to remove defective paper when it finally leaves the factory to prevent unqualified products from flowing into customers.

[0004] The present application provides a paper defect marking device, comprising a frame, on which an image acquisition unit, a marking unit and a controller are sequentially arranged along the conveying direction of external paper;

[0005] The image acquisition unit is used to acquire the image of the external paper surface;

[0006] The marking unit is used to mark the external paper with defects;

[0007] The marking units and the image acquisition units are combined in a one-to-one correspondence;

[0008] The controller is connected to the image acquisition unit and the marking unit, and is used for collecting image data of the external paper, transmitting it to a remote computer, and controlling the marking unit to mark the external paper with defects.

[0009] Furthermore, the marking unit includes a telescopic mechanism connected to the frame, the telescopic end of the telescopic mechanism is connected to a rotating shaft, a label paper tube is mounted on the rotating shaft, the controller is connected to the telescopic mechanism for controlling the up and down movement of the telescopic mechanism, thereby driving the label paper tube to contact or move away from the surface of the external paper, and the controller is connected to the rotating shaft for controlling the rotating shaft to rotate along the conveying direction of the external paper.

[0010] Furthermore, two marking units are provided, and the two marking units are symmetrically arranged on both sides of the external paper.

[0011] Furthermore, the marking unit also includes a width adjustment mechanism, which includes a one-to-one matching slide groove and a slider, the slide groove is opened on the frame and is perpendicular to the conveying direction of the external paper, the slider is slidably connected to the slide groove, and the telescopic mechanism is fixedly connected to the slider.

[0012] Furthermore, the telescopic end is an elastic telescopic rod.

[0013] Furthermore, the image acquisition unit includes an industrial camera and a camera.

[0014] Furthermore, the image acquisition unit also includes a lighting unit, and the lighting unit is used to supplement the brightness of the image acquisition unit.

[0015] This application has the following beneficial effects:

[0016] The paper defect marking device provided by the present application is provided with an image acquisition unit, a marking unit and a controller in sequence on the frame along the direction of external paper conveyance. The controller is connected to the image acquisition unit and the marking unit, and is used to collect image data of external paper and transmit it to a remote computer and control the marking unit to mark the external paper with defects. The paper defect marking device can perform online quality monitoring of external paper on the production line. When the controller receives the defect image collected by the image acquisition unit, the marking unit is controlled to mark the defect of the external paper so as to distinguish defective paper from qualified paper during subsequent quality inspection. The marking unit affixes a label to the defect of the external paper. Whether the paper is rolled or cut into sheets by a sheet cutter, the location and number of defects can be intuitively seen, which facilitates the operator to intuitively analyze whether the quality of the paper meets the standard and accurately calculate the defect rate during quality inspection. And the paper pieces with defects can be directly extracted through the label to ensure that all paper pieces shipped from the factory are qualified products, thereby preventing defective paper from flowing into customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an overall schematic diagram of a paper defect marking device provided in some embodiments of the present application,

[0018] Figure 2 It is a schematic diagram of a marking unit provided in some embodiments of the present application.

[0019] Description of reference numerals:

[0020] 100. Frame, 200. External paper, 300. Image acquisition unit, 400. Marking unit, 410. Telescopic mechanism, 411. Telescopic end, 420. Rotating shaft, 430. Label paper tube, 500. Controller, 600. Width adjustment structure, 610. Slide slot, 620. Slider, 700. Transfer platform. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method. In addition, if there are descriptions involving "first", "second", etc. in the implementation method of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] like Figure 1As shown, the present application provides a paper defect marking device, including a frame 100, on which an image acquisition unit 300, a marking unit 400 and a controller 500 are sequentially arranged along the conveying direction of the external paper 200. Among them, the image acquisition unit 300 is used to acquire the image of the surface of the external paper 200; the marking unit 400 is used to mark the external paper 200 with defects; the marking unit 400 and the image acquisition unit 300 are combined in a one-to-one correspondence; the controller 500 is connected to the image acquisition unit 300 and the marking unit 400, and is used to collect the image data of the external paper 200 and transmit it to the remote computer and control the marking unit 400 to mark the external paper 200 with defects. The paper defect marking device can perform online quality monitoring of the external paper 200 on the production line. When the controller 500 receives the defect image acquired by the image acquisition unit 300, it controls the marking unit 400 to mark the defect of the external paper 200, so as to distinguish defective paper from qualified paper in subsequent quality inspection.

[0025] In some embodiments provided in the present application, the image acquisition unit 300 includes an industrial camera or a camera. The industrial camera or the camera takes an image of the surface of the external paper 200 and transmits the image to a remote computer via wireless or wired transmission.

[0026] In some implementations provided in the present application, the image acquisition unit 300 further includes a lighting unit 310 , and the lighting unit 310 is used to supplement the brightness of the image acquisition unit 300 .

[0027] like Figure 2 As shown, in some embodiments provided by the present application, the marking unit 400 includes a telescopic mechanism 410 connected to the frame 100, the telescopic end 411 of the telescopic mechanism 410 is connected to the rotating shaft 420, and the label paper roll 430 is sleeved on the rotating shaft 420. The controller 500 controls the telescopic mechanism 410 to move up and down, thereby driving the label paper roll 430 to contact or move away from the surface of the external paper 200, and the controller 500 controls the rotating shaft 420 to rotate along the conveying direction of the external paper 200. The paper defect marking device in this embodiment can perform online quality monitoring on the external paper 200 on the production line. When the controller 500 receives the defect image collected by the image acquisition unit 300, it controls the marking unit 400 to attach a label to the defect of the external paper 200 to mark it. Whether the paper is rolled or cut into sheet-shaped paper by a sheet cutter, the position and number of the defects can be intuitively seen, which is convenient for operators to intuitively analyze whether the quality of the paper meets the standard and accurately calculate the defect rate during quality inspection. When the product is in the form of paper cut into sheets by a sheeter, the defective paper sheets can be directly pulled out by attaching labels to the defective areas, ensuring that all paper sheets leaving the factory are qualified, thereby preventing defective paper from entering the customer's market.

[0028] In the above embodiment, the telescopic end 411 can be an elastic telescopic rod, which can be elastically deformed when the marking unit 400 contacts the external paper 200 on the transmission platform 700 to prevent the marking unit 400 from causing mechanical damage to the external paper 200.

[0029] In a specific embodiment of the present embodiment, the telescopic mechanism 410 is an electric screw, and a slider is threadedly sleeved on the screw as a telescopic end 411, and a rotating shaft 420 is provided on the slider, and a label paper roll 430 is sleeved on the rotating shaft 420. When the image acquisition unit 300 transmits the defective image on the external paper 200 to the remote computer, the monitoring personnel immediately issue instructions to the controller 500 to control the electric screw in the marking unit 400 to rotate, so that the slider on the screw moves downward along the screw, driving the label paper roll 430 on the slider to contact the surface of the external paper 200. As the rotating shaft 420 connected to the slider rotates, the label paper roll 430 rotates in contact with the external paper, and the pre-segmented label paper on the label paper roll 430 is attached to the defective paper. At the same time, the remote computer monitoring personnel can notify the workshop operator to check the machine to eliminate the cause of the paper defect.

[0030] In some embodiments provided in the present application, two marking units 400 are provided, which are symmetrically arranged on both sides of the external paper 200, and can mark both sides of the defective paper at the same time, so that when the external paper 200 is subsequently cut along the center line, the label paper on each side of the paper divided by the center line is retained as a marking mark, which is suitable for the cutting methods of more paper products.

[0031] In some embodiments provided in the present application, the marking unit 400 further includes a width adjustment mechanism 600, which includes a one-to-one matching slide 610 and a slider 620, the slide is opened on the frame 100, and the slide is perpendicular to the direction of conveying the external paper 200 sheets. In some embodiments of the present embodiment, there is one marking unit 400, and the slider 620 is pushed to slide in the slide groove 610 until the projection of the marking unit 400 falls on the outer edge line of the external paper 200, and then the slider 620 is fixed to adapt to the external paper 200 of different widths on the production line; in other embodiments of the present embodiment, there are two marking units 400, which are symmetrically arranged on both sides of the external paper 200. According to the specifications of the produced paper, the slider 620 is pushed to slide in the slide groove 610 so that the marking units 400 move closer to or away from each other, so that the respective projections of the two marking units 400 fall on the outer edge lines on both sides of the external paper 200, and the width sandwiched between the two marking units 400 is adjusted by the width adjustment mechanism 600 to adapt to the external paper 200 of different specifications conveyed on the production line.

[0032] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A paper defect marking device, comprising a frame (100), characterized in that: An image acquisition unit (300), a marking unit (400) and a controller (500) are sequentially arranged on the frame (100) along the conveying direction of the external paper (200); The image acquisition unit (300) is used to acquire an image of the surface of the external paper (200); The marking unit (400) is used to mark the external paper (200) with defects; The marking unit (400) and the image acquisition unit (300) are combined in a one-to-one correspondence; The controller (500) is connected to the image acquisition unit (300) and the marking unit (400) and is used to collect image data of the external paper (200) and transmit it to a remote computer and control the marking unit (400) to mark the external paper (200) with defects.

2. The paper defect marking device according to claim 1, characterized in that: The marking unit (400) comprises a telescopic mechanism (410) connected to the frame (100); the telescopic end (411) of the telescopic mechanism (410) is connected to a rotating shaft (420); a label paper tube (430) is sleeved on the rotating shaft (420); the controller (500) is connected to the telescopic mechanism (410) and is used to control the telescopic mechanism (410) to move up and down, thereby driving the label paper tube (430) to contact or move away from the surface of the external paper (200); and the controller (500) is connected to the rotating shaft (420) and is used to control the rotating shaft (420) to rotate along the conveying direction of the external paper (200).

3. The paper defect marking device according to claim 2, characterized in that: Two marking units (400) are provided, and the two marking units (400) are symmetrically arranged on both sides of the external paper (200).

4. The paper defect marking device according to claim 2, characterized in that: The marking unit (400) further comprises a width adjustment mechanism (600), wherein the width adjustment mechanism (600) comprises a one-to-one matching slide groove (610) and a slider (620), wherein the slide groove (610) is provided on the frame (100) and is perpendicular to the conveying direction of the external paper (200), the slider (620) is slidably connected to the slide groove (610), and the telescopic mechanism (410) is fixedly connected to the slider (620).

5. The paper defect marking device according to claim 2, characterized in that: The telescopic end (411) is an elastic telescopic rod.

6. The paper defect marking device according to claim 1, characterized in that: The image acquisition unit (300) comprises an industrial camera and a camera head.

7. The paper defect marking device according to any one of claims 1 to 6, characterized in that: The image acquisition unit (300) further comprises an illumination unit (310), wherein the illumination unit (310) is used to supplement the brightness of the image acquisition unit (300).

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